Abstract #2870

A New Method to Improve RF Safety of Implantable Medical Devices using Inductive Coupling at 3.0T MRI

Bu S Park¹, Joshua Guag², Sunder Rajan², and Brent McCright³

¹FDA, Silver Spring, MD, United States, ²Division of Biomedical Physics (DBP), FDA, Silver Spring, MD, United States, ³Division of Cellular and Gene Therapies (DCGT), FDA, Silver Spring, MD, United States

Synopsis

Keywords: Safety, Electromagnetic Tissue Properties

This study describes a new method to improve RF safety of implantable medical devices located outside of the imaging region by using a secondary resonator (SR) to reduce electric fields and corresponding specific absorption rate (SAR) during MRI. The SR is designed to produce opposing electro-magnetic fields (EM-fields) compared to the EM-fields made by a body coil at 3.0T. This study was performed using numerical simulations with ASTM phantom and human models, and corresponding experimental verifications with the ASTM phantom.

Keywords: RF safety, secondary resonator

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.